chapter 1 - living things

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Across
  1. 3. the response for a stimuli
  2. 6. plant, tiger, bird and an insect are examples to
  3. 7. bicycle, notebook, and a car are examples to
Down
  1. 1. air exchange
  2. 2. production of offsprings
  3. 4. food exchange
  4. 5. waste exchange